import { randomBytes } from 'crypto'
import { SHA256 } from '../extra_modules/SHA.js'
import { unsign } from '../extra_modules/unsign.js'

export const setup = function (router, con, server) {
    const temp_code_to_token = {}
    router.post('/authorize', async (req, res) => {
        if (!unsign(req.cookies.AUTH_COOKIE, req, res)) {
            return
        }

        let data = await server.hcaptcha.verify(req.body['h-captcha-response'])

        if (data.success) {
            let appid = req.body.application_id
            if (typeof appid === 'string') {
                appid = Number(appid)
            }
            if (typeof appid === 'number') {
                const token = randomBytes(150).toString('base64')

                let tokencode
                while (
                    tokencode === undefined ||
                    temp_code_to_token[tokencode] !== undefined
                ) {
                    tokencode = randomBytes(15)
                        .toString('base64')
                        .replaceAll('/', 'f')
                        .replaceAll('+', 'A') //"/" and "+" may break some apps
                }
                temp_code_to_token[tokencode] = {
                    userid: res.locals.userid,
                    appid: appid,
                    token: token,
                }
                setTimeout(
                    () => {
                        let data = temp_code_to_token[tokencode]
                        if (
                            data !== undefined &&
                            data.token === token &&
                            data.appid === appid &&
                            data.userid === res.locals.userid
                        ) {
                            temp_code_to_token[tokencode] = undefined
                        }
                    },
                    1000 * 60 * 5
                )

                const sql =
                    'SELECT application_auth_url FROM ipost.application where application_id=?'

                con.query(sql, [appid], (err, result) => {
                    if (err || result.length !== 1) {
                        console.err(err)
                        res.redirect(`/authorize?id=${req.body.application_id}`)
                        return
                    }
                    let extra = ''
                    if (req.body.application_extra !== '') {
                        extra = '&extra=' + String(req.body.application_extra)
                    }
                    res.redirect(
                        `${result[0].application_auth_url}?code=${tokencode}${extra}`
                    )
                })

                return
            }
        }

        res.redirect(`/authorize?id=${req.body.application_id}`)

        /* #swagger.security = [{
            "appTokenAuthHeader": []
        }] */
    })

    router.post('/redeemauthcode', (req, res) => {
        if (temp_code_to_token[req.body.authcode] === undefined) {
            res.status(400)
            res.json({ status: 400, message: 'invalid code given' })
            return
        }

        if (typeof req.body.auth === 'string') {
            try {
                req.body.auth = JSON.parse(req.body.auth)
            } catch (err) {
                console.log('error parsing', err)
            }
        }
        if (
            typeof req.body.auth !== 'object' ||
            typeof req.body.auth.secret !== 'string' ||
            typeof req.body.auth.appid !== 'number' ||
            req.body.auth.secret.length !== 200 ||
            Buffer.from(req.body.auth.secret, 'base64').length !== 150 ||
            req.body.auth.appid !== temp_code_to_token[req.body.authcode].appid
        ) {
            //console.log(1,req.body.auth,temp_code_to_token[req.body.authcode].appid)
            res.status(420).send('invalid authentication object')
            return
        }

        const appid = req.body.auth.appid

        const checksecret = SHA256(req.body.auth.secret, appid, 10000)

        const checksql =
            'SELECT application_id from ipost.application where application_secret=? and application_id=?'
        const checkvalues = [checksecret, appid]

        con.query(checksql, checkvalues, (error, result_object) => {
            if (
                error ||
                result_object[0] === undefined ||
                result_object[0].application_id !== appid
            ) {
                res.status(400)
                res.json({ status: 400, message: 'invalid code given' })
                return
            }

            let data = temp_code_to_token[req.body.authcode]
            temp_code_to_token[req.body.authcode] = undefined

            const sql =
                'INSERT INTO `ipost`.`auth_tokens`(`auth_token`,`auth_token_u_id`,`auth_token_isfrom_application_id`) VALUES(?,?,?);'

            const values = [
                SHA256(data.token, appid, 10000),
                data.userid,
                data.appid,
            ] //token,id,appid
            con.query(sql, values, (err, result) => {
                if (err) {
                    res.json({ status: 500, message: 'error redeeming code' })
                    console.err(err)
                } else {
                    res.json({
                        status: 200,
                        message: 'successfully redeemed code',
                        token: data.token,
                    })
                }
            })
        })
    })

    /* #swagger.security = [{
        "appTokenAuthHeader": []
    }] */
}